Bashing my head on a wall trying to get my 8 gpm burner to fire. I had just replaced fuel filter, electrodes, and nozzle towards the end of last year prior to adding antigel to the diesel and filling the tanks. It had been cutting in and out earlier this year before no longer firing completely.
Blower motor works and exhausts, replaced nozzle, fuel filter, fuel lines, regaped the electrodes, and replaced the fuel pump. 120 volts is reaching the solenoid. Can’t get the pump to bleed any fuel out of the pump. It dumped the small amount of testing and shipping oil, but nothing after that. The fuel lines are clear and routed correctly. Any tricks to getting it primed? I filled the line from the filter to the pump, but nothing. Reset button on blower motor does nothing and I can see the blower motor does engage the pump.
Hows the inside of your fuel tank look? I few years ago I had a big piece of something get stuck to the bottom of the suction tube and wasn’t allowing it to pull fuel.
I would pull out the electric motor and verify that the fuel pump is spinning freely, it’s entirely possible that the pump is locked up but the motor is still spinning due to the plastic transmission piece being stripped out.
Verified the fuel pump spun prior to install, but it certainly wont hurt tot ske it back out and check. I’m wondering if it has something to do with the screw with the hole and 2 crush washers that attaches the solenoid, that would be the fuel transmission piece between the pump and copper line, but then again, I should still be getting fuel out of the pump bleeder valve, right? I even removed the bleeder plug completely and inserted a hose. Sucked on it as hard as I could to try to pull some fuel to prime, but it seemed like there was resistance. Am I missing some other component? Definitely have been testing with the water running out of the hose.
